firstly the cities should be the size of the ones in assassins creed!!!
most houses could have basic interiors generated from templates.
important places would of course be made by hand
the gameworld should be on a scale that red mountain is larger than everest
natural places would be semi randomly generated... better algorithms to be used
1: textures get tessellated... rocky terrain actualy pops out
2: textures automatically make props on them
3: upgraded tree system
4: weather greatly effects the look of places (it wouldn't permantly change the landscape though)
caves should get much larger variety...a colour will be selected
a spec map will be selected (shineyness)
a bump map will be selected
a height map will be selected
say we have 3 different cave kits. each cave piece has two shaders,,, texture one and texture two. the designer uses what i posted above to make texture one and texture two!
imagine we have 10 colours
5 spec maps
5 hieghtmaps
5 bumpamps
10x5x5x5= 1250 combinations...
then of course we have texture two... making 2500 combinations
and 3 cave kits making 7500
thats possible combinations on cave walls alone... then we have use of liquids... overlays... dust.. lighting... furniture... props
do i even need to talk about dungeons?
ItemsArmour has many alterations!! an armour creation system should be made!!
every piece of Armour has attachments that change the Armour
every material has a shader... it should be possible to mix styles and materials. the material provides the weight and the style gives a weight multiplier. the style provides the protection and the material gives the multiplier!!
thus it is possible to make elven styled armour our of glass... or ebony orcish ( materials and styles have to be learnt before they can be made)
so armour and weapons can be generated.
more types of weapons need to be made aswell!! spears missing in such a large game would be a moronic mistake!! throwing weapons,crossbows,knuckle dusters and... every type of weapon needs to be in!!
customizable armour is awesome... clothes are needed too!!
there are going to be so many peasants in the cities that most clothes will need to be dye able!! shirts and pants need to go under armour!!
more armour slots... pauldrons! skirts need to come back too... and overcoats... so many designs!!!
acrobatics it needs to be in!!!
whatever mirrors edge 2 has it needs to beat!!
realistic climbing.. til you get those enchantments
npcsskeletons and other humanoid enemies that are creatures to be able to wear items
creatures need to fight like in real life... a wolf bites and does not headbut!!
horses,dogs,skeletons,bird,fish and atronach need special attention because of how many variations of them there can be! but realy every npc needs to be amazing.
yes generic npcs will need to be added for giant cities... but honestly... how are you going to know every person walking down a street in a city of thousands?
every race and body type needs its own skeleton and gore system
any kind of creature that could have its own race should have its own race (dremora for example)
fantastic crime system please...
attributes bring them back
and make them alter the body (strength growing some muscles)
but dont make a concrete rule of things.. some characters should be freakishly strong and look skeletal
instead of getting skills up to choose a perk or an attribute try a system where leveling up a skill enough grants you a perk in that skill. perks increase attributes .
Magicmore magical effects.
any magic effects from past tes games (LEVITATE!!) should be ingame!
variations of the same magic... could i have green lightning please?
charging spells
spells changing visuals depending on the power.. fire is blue when its doing 100 damage
every spell should have nice effects. draining health should look like you are svcking their life force from their face into your mouth.
undead should be summoned in a different way to daedra
daedra need different entrances
combatlocational damage...
more physics based
crippling
more realistic (fantasy world realistic, not real life realistic!!)
combined with many other aspects of the game (like stealth and acrobatics)